WO2015106051A1 - Commande de débit d'huile de poussoir de soupape de moteur et élément antirotation - Google Patents

Commande de débit d'huile de poussoir de soupape de moteur et élément antirotation Download PDF

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Publication number
WO2015106051A1
WO2015106051A1 PCT/US2015/010729 US2015010729W WO2015106051A1 WO 2015106051 A1 WO2015106051 A1 WO 2015106051A1 US 2015010729 W US2015010729 W US 2015010729W WO 2015106051 A1 WO2015106051 A1 WO 2015106051A1
Authority
WO
WIPO (PCT)
Prior art keywords
engine
groove
peripheral surface
connecting channel
height
Prior art date
Application number
PCT/US2015/010729
Other languages
English (en)
Inventor
Douglas J. Nielsen
Original Assignee
Eaton Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Eaton Corporation filed Critical Eaton Corporation
Priority to EP15734839.2A priority Critical patent/EP3092377A4/fr
Publication of WO2015106051A1 publication Critical patent/WO2015106051A1/fr
Priority to US15/206,708 priority patent/US10132208B2/en
Priority to US15/821,159 priority patent/US20180156078A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/14—Tappets; Push rods
    • F01L1/146—Push-rods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/20—Adjusting or compensating clearance
    • F01L1/22—Adjusting or compensating clearance automatically, e.g. mechanically
    • F01L1/24—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically
    • F01L1/245—Hydraulic tappets
    • F01L1/25—Hydraulic tappets between cam and valve stem
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/14—Tappets; Push rods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/20—Adjusting or compensating clearance
    • F01L1/22—Adjusting or compensating clearance automatically, e.g. mechanically
    • F01L1/24—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically
    • F01L2001/2427—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically by means of an hydraulic adjusting device located between cam and push rod
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/20—Adjusting or compensating clearance
    • F01L1/22—Adjusting or compensating clearance automatically, e.g. mechanically
    • F01L1/24—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically
    • F01L2001/2444—Details relating to the hydraulic feeding circuit, e.g. lifter oil manifold assembly [LOMA]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L2305/00—Valve arrangements comprising rollers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L2307/00—Preventing the rotation of tappets

Definitions

  • the present disclosure relates generally to hydraulic lash adjusting tappets of the type having a roller follower for contacting a cam shaft in an internal combustion engine valve train.
  • Roller lifters can be used in an engine valvetrain to reduce friction and as a result provide increased fuel economy.
  • a roller lifter can open a valve quicker and for a longer period of time than a flat tappet lifter.
  • airflow can be attained quicker and longer increasing the ability to create power.
  • An engine roller lifter for use in a valve train of an internal combustion engine and constructed in accordance to one example of the present disclosure includes a body having an outer peripheral surface configured for sliding movement in a bore provided in the engine.
  • the bore can be supplied by an oil passage communicating therewith.
  • the body can define (i) an axial pocket that receives a plunger therein and (ii) a transverse passage.
  • a groove can be formed in the body and inset from the outer peripheral surface.
  • a connecting channel can be formed in the body and inset from the outer peripheral surface, the connecting channel fluidly connecting the groove and the transverse passage.
  • An anti-rotation ring can be received at the groove.
  • a roller bearing can be rotatably mounted to the body and configured for rolling contact with an engine camshaft. Oil received at the groove from the bore flows around the anti-rotation ring, along the connecting channel and into the transverse passage and onto the roller bearing.
  • the groove has a first height in an axial direction.
  • the anti-rotation ring has a second height in the axial direction. The first height is greater than the second height.
  • the connecting channel can be transverse to an axis of the transverse passage.
  • the transverse passage can extend entirely through the body.
  • the body can further define an inset formed in the outer peripheral surface.
  • the engine roller can further comprise an oil inlet hole defined in the body that connects the inset with the axial pocket. The oil inlet hole can be configured to communicate oil between the outer peripheral surface and the plunger.
  • the anti-rotation ring can be snap fit onto the groove of the body.
  • the anti-rotation ring can include a ring body having an anti-rotation protrusion extending therefrom.
  • the second height is defined at the ring body.
  • the anti- rotation protrusion has a third height in the axial direction. The third height is greater than the second height.
  • the anti-rotation protrusion can be configured to create a line contact with an opposing surface of a bore slot defined in the engine bore.
  • the groove extends along a groove depth into the peripheral surface.
  • the connecting channel can extend along a connecting channel depth into the peripheral surface.
  • the groove depth can be greater than the connecting channel depth.
  • the connecting channel can extend axially along the peripheral surface in a direction transverse to the transverse passage.
  • An engine roller lifter for use in a valve train of an internal combustion engine and constructed in accordance to another example of the present disclosure includes a body having an outer peripheral surface configured for sliding movement in a bore provided in the engine.
  • the bore is supplied by an oil passage communicating therewith.
  • the body can define a transverse passage.
  • a groove can be formed around the body and inset from the outer peripheral surface.
  • a connecting channel can be formed in the body and inset from the outer peripheral surface, the connecting channel fluidly connects the groove and the transverse passage.
  • a roller bearing can be rotatably mounted to the body and configured for rolling contact with an engine camshaft. Oil received at the groove from the bore flows along the connecting channel, into the transverse passage and onto the roller bearing.
  • an anti-rotation ring can be received at the groove.
  • the anti-rotation ring can be snap fit onto the groove of the body.
  • the anti-rotation ring can include a ring body having an anti-rotation protrusion extending therefrom.
  • the anti- rotation protrusion can be configured to create a line contact with an opposing surface of a bore slot defined in the engine bore.
  • the second height can is defined at the ring body.
  • the anti-rotation protrusion has a third height in the axial direction. The third height is greater than the second height.
  • the groove extends along a groove depth into the peripheral surface.
  • the connecting channel can extend along a connecting channel depth into the peripheral surface.
  • the groove depth can be greater than the connecting channel depth.
  • the connecting channel can extend axially along the peripheral surface in a direction transverse to the transverse passage.
  • An engine roller lifter for use in a valve train of an internal combustion engine and constructed in accordance to additional features includes a body that extends along a longitudinal axis.
  • the body has an outer peripheral surface configured for sliding movement in a bore provided in the engine.
  • the bore is supplied by an oil passage communicating therewith.
  • the body can define (i) an axial pocket that receives a plunger therein and (ii) a transverse passage.
  • a groove can be formed in the body and inset from the outer peripheral surface.
  • a connecting channel can be formed in the body along an axis generally parallel to the longitudinal axis of the body.
  • the connecting channel can be inset from the outer peripheral surface.
  • the connecting channel can fluidly connect the groove and the transverse passage.
  • An anti-rotation ring can be received at the groove.
  • the anti-rotation ring can have a ring body and an anti-rotation protrusion extending therefrom.
  • the anti-rotation protrusion can extend radially beyond the outer peripheral surface of the body in an installed position.
  • the anti-rotation protrusion can be configured to create a line contact with an opposing surface of a bore slot defined in the engine bore.
  • a roller bearing can be rotatably mounted to the body and configured for rolling contact with an engine camshaft. Oil received at the groove from the bore can flow around the anti-rotation ring, along the connecting channel, into the transverse passage and onto the roller bearing.
  • the groove can extend along a groove depth into the peripheral surface.
  • the connecting channel can extend along a connecting channel depth into the peripheral surface.
  • the groove depth can be greater than the connection channel depth.
  • the transverse passage can extend entirely through the body.
  • the groove can have a first height in an axial direction.
  • the anti-rotation ring can have a second height at the ring body in the axial direction.
  • the first height can be greater than the second height.
  • the anti-rotation protrusion can have a third height in the axial direction.
  • the third height can be greater than the second height.
  • FIG. 1 is a roller lifter constructed in accordance to one example of the present disclosure and shown in an exemplary Type V valve train arrangement;
  • FIG. 2 is a first side perspective view of the roller lifter of FIG. 1 ;
  • FIG. 3 is a second side perspective view of the roller lifter of FIG. 2 and shown with an anti-rotation clip in exploded view;
  • FIG. 4 is cross-sectional view of the roller lifter taken along lines 4-4 of FIG. 2;
  • FIG. 5 is a side view of the roller lifter shown received in an exemplary guide bore of a cylinder head of an internal combustion engine illustrating details of an exemplary oil feed circuit
  • FIG. 5A is a detail view of an interface between an anti-rotation ring and an opposing bore slot in the cylinder head;
  • FIG. 6 is a cross-sectional view of the roller lifter taken along lines 6-6 of FIG.
  • FIG. 6A is a detail view of area 6A of FIG. 6.
  • a roller lifter constructed in accordance to one example of the present disclosure is shown and generally identified at reference number 10.
  • the roller lifter 10 is shown as part of a Type V arrangement. It will be appreciated that while the roller lifter 10 is shown in a Type V arrangement, the roller lifter 10 may be used in other arrangements within the scope of the present disclosure. In this regard, the features described herein associated with the roller lifter 10 can be suitable to a wide variety of applications.
  • a cam lobe 12 indirectly drives a first end of a rocker arm 14 with a push rod 16. It will be appreciated that in some configurations, such as an overhead cam, the roller lifter 10 may be a direct link between the cam lobe 12 and the rocker arm 14. A second end of the rocker arm 14 actuates a valve 20. As the cam lobe 12 rotates, the rocker arm 14 pivots about a fixed shaft 22.
  • the roller lifter 10 generally includes a body 30, a leakdown assembly 32 received within the body 30, a roller bearing 34 rotatably mounted to the body 30 and an anti-rotation ring 40.
  • the body 30 includes an outer peripheral surface 42 configured for sliding movement in a bore 48 provided in a cylinder head 50 of an internal combustion engine 52 (FIG. 5).
  • the body 30 can define an axial pocket 60 that receives the leakdown assembly 32.
  • the leakdown assembly 32 can include a plunger 62, a check ball 64, a first biasing member 66, a cage 70 and a second biasing member 72.
  • An inset 76 can be provided in the body 30 at the outer peripheral surface 42.
  • An oil inlet hole 80 (FIG. 4) can be defined in the body 30 that connects the inset 76 with the axial pocket 60.
  • the oil inlet hole 80 can be configured to communicate oil between the outer peripheral surface 42 and the plunger 62 of the leakdown assembly 32.
  • the body 30 can define a transverse passage 84.
  • the transverse passage 84 can extend entirely through the body 30 along an axis generally transverse to a longitudinal axis 88 of the body 30.
  • a pair of clips 90 are nestingly received in corresponding grooves 92 formed on the body 30 for capturing an axle 94 of the roller bearing 34 in the roller lifter 10.
  • the roller bearing 34 can be configured for rolling contact with the engine camshaft 12.
  • the body 30 includes a groove 100 formed therein and inset from the outer peripheral surface 42.
  • the groove 100 has a groove width 102 (FIG. 3) and a groove depth 104 (FIG. 4).
  • the groove 100 is configured to receive the anti-rotation ring 40 thereat (FIGS. 2 and 3).
  • the anti-rotation ring 40 generally includes a ring body 1 10 having an anti- rotation protrusion 1 12 extending therefrom.
  • the anti-rotation protrusion 112 extends radially beyond the outer peripheral surface 42 of the body 30 in an installed position.
  • the anti-rotation protrusion 1 12 is configured to locate or key in a corresponding bore slot 1 16 in the cylinder head 50 for inhibiting rotation of the roller lifter 10 about the axis 88 during operation.
  • the anti-rotation ring 40 can be snap fit into the groove 100.
  • the anti- rotation ring 40 has a first height 120 (FIG. 3) at the ring body 1 10 and a second height 122 (FIG.
  • the second height 122 is greater than the first height 120.
  • the snap fit relationship of the anti- rotation ring 40 and the groove 100 allows for far looser tolerances as compared to a conventional pin press-fit into a hole.
  • the configuration can be less costly and provide greater surface area contact (line contact along the second height 122 of the anti-rotation protrusion 1 12 with the surface of the bore slot 1 16) rather than a conventional point contact offered by a round headed pin with the cylinder head 50. See also FIG. 5A.
  • the anti-rotation ring 40 reduces stress and thus wear on the bore slot 116 and the anti-rotation protrusion 1 12.
  • the body 30 includes a connecting channel 130 formed therein.
  • the connecting channel 130 can be inset a connecting channel depth 134 from the outer peripheral surface 42. In one example the connecting channel depth 134 is less than the groove depth 104.
  • the connecting channel 130 fluidly connects the groove 100 with the transverse passage 84.
  • oil is permitted to flow around the ring body 1 10 of the anti-rotation ring 40 within the groove 100.
  • the ring height 120 is less than the groove width 102 allowing a predetermined rate of oil to pass between the ring body 1 10 and the body 30 of the roller lifter 10.
  • the groove 100 is therefore dual-purpose allowing for receipt of the anti-rotation clip 40 and providing an oil pathway to communicate oil to the roller bearing 34.
  • the connecting channel 130 is inset or recessed into the outer peripheral surface 42 of the body, a predetermined amount of oil is permitted to flow from the groove 100 to the transverse passage 84. See also FIG. 6A.
  • the connecting channel depth 134 is minimal so as to control the rate of oil flow to a predetermined value.
  • the connecting channel 130 can extend along an axis that is parallel to the longitudinal axis 88.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

L'invention concerne un poussoir à rouleau de moteur destiné à être utilisé dans un train de soupapes d'un moteur à combustion interne et construit conformément à un autre exemple de la présente invention, comprenant un corps possédant une surface périphérique externe conçue pour un mouvement coulissant dans un alésage ménagé dans le moteur. L'alésage est alimenté par un passage d'huile communiquant avec celui-ci. Le corps peut définir un passage transversal. Une rainure peut être formée autour du corps et rentrée depuis la surface périphérique externe. Un canal de raccordement peut être formé dans le corps et rentré depuis la surface périphérique externe, le canal de raccordement reliant fluidiquement la rainure et le passage transversal. Un roulement à rouleaux peut être monté rotatif sur le corps et conçu pour un contact roulant avec un arbre à cames de moteur. L'huile reçue au niveau de la rainure depuis l'alésage s'écoule le long du canal de raccordement, dans le passage transversal et sur le roulement à rouleaux.
PCT/US2015/010729 2014-01-12 2015-01-09 Commande de débit d'huile de poussoir de soupape de moteur et élément antirotation WO2015106051A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP15734839.2A EP3092377A4 (fr) 2014-01-12 2015-01-09 Commande de débit d'huile de poussoir de soupape de moteur et élément antirotation
US15/206,708 US10132208B2 (en) 2014-01-12 2016-07-11 Engine valve lifter oil flow control and anti-rotation feature
US15/821,159 US20180156078A1 (en) 2014-01-12 2017-11-22 Engine valve lifter oil flow control and anti-rotation feature

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US201461926379P 2014-01-12 2014-01-12
US61/926,379 2014-01-12
US201562101162P 2015-01-08 2015-01-08
US62/101,162 2015-01-08

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US15/206,708 Continuation US10132208B2 (en) 2014-01-12 2016-07-11 Engine valve lifter oil flow control and anti-rotation feature

Publications (1)

Publication Number Publication Date
WO2015106051A1 true WO2015106051A1 (fr) 2015-07-16

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ID=53524348

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2015/010729 WO2015106051A1 (fr) 2014-01-12 2015-01-09 Commande de débit d'huile de poussoir de soupape de moteur et élément antirotation

Country Status (4)

Country Link
US (1) US10132208B2 (fr)
EP (1) EP3092377A4 (fr)
CN (2) CN104832238A (fr)
WO (1) WO2015106051A1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017106839A1 (fr) * 2015-12-18 2017-06-22 Eaton Corporation Dispositif d'élévation de soupape de moteur
WO2017143111A1 (fr) * 2016-02-19 2017-08-24 Eaton Corporation Poussoir de soupape de moteur comportant un bouchon anti-rotation
GB2548900A (en) * 2016-04-01 2017-10-04 Delphi Int Operations Luxembourg Sarl Tappet, high pressure pump comprising at least one tappet, engine comprising at least one tappet, engine comprising a high pressure pump having at least one
US10119607B2 (en) 2016-04-15 2018-11-06 Koyo Bearings North America Llc Follower mechanism
USD885439S1 (en) 2017-02-17 2020-05-26 Eaton Corporation Engine valve lifter having anti-rotation plug
US10690016B2 (en) 2016-02-19 2020-06-23 Eaton Intelligent Power Limited Engine valve lifter having anti-rotation plug
US10968788B2 (en) 2018-01-31 2021-04-06 Eaton Intelligent Power Limited Two-part lifter assembly
USD932853S1 (en) 2017-02-17 2021-10-12 Eaton Intelligent Power Limited Engine valve lifter having anti-rotation plug
US11143059B2 (en) 2019-10-03 2021-10-12 Koyo Bearings North America Llc Tappet assembly with unground outer cup
US11149593B2 (en) 2019-10-03 2021-10-19 Koyo Bearings North America Llc Tappet assembly with formed anti-rotation alignment device

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WO2014123755A2 (fr) * 2013-01-31 2014-08-14 Eaton Corporation Procédé centrifuge pour éliminer de l'air dans une chambre haute pression de dispositif de réglage de fouettement hydraulique
WO2015106051A1 (fr) * 2014-01-12 2015-07-16 Eaton Corporation Commande de débit d'huile de poussoir de soupape de moteur et élément antirotation
USD896842S1 (en) 2015-11-23 2020-09-22 Innio Jenbacher Gmbh & Co Og Valve for engine
US10865662B2 (en) 2016-05-07 2020-12-15 Eaton Intelligent Power Limited Anti-rotation feature for followers using an oil gallery insert
CN106368755A (zh) * 2016-09-27 2017-02-01 浙江大学 可变气门配气机构
WO2018098283A1 (fr) * 2016-11-22 2018-05-31 Eaton Corporation Commande de débit d'huile d'un arbre de relevage de soupape de moteur et élément anti-rotation
KR20180085935A (ko) * 2017-01-20 2018-07-30 두산인프라코어 주식회사 엔진의 롤러 태핏용 어댑터 및 이를 포함하는 엔진의 롤러 태핏 조립체
US10927723B2 (en) * 2017-07-03 2021-02-23 Eaton Intelligent Power Limited Engine valve lifter assemblies
CN112673152B (zh) * 2018-07-13 2023-02-03 伊顿智能动力有限公司 基于摇臂的放气引擎制动
CN111749826A (zh) * 2019-03-26 2020-10-09 罗伯特·博世有限公司 用于高压燃料泵的滚子挺杆
US11002160B2 (en) * 2019-08-22 2021-05-11 Caterpillar Inc. Lifter providing improved cam lobe lubrication
CN114810339A (zh) * 2022-05-17 2022-07-29 叶华 一种具有外部传动机构的环缸发动机
WO2023232294A1 (fr) * 2022-06-03 2023-12-07 Eaton Intelligent Power Limited Dispositif de levage à désactivation de cylindre avec alimentation de commande hydraulique depuis l'extérieur du bloc moteur

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JP2004052605A (ja) * 2002-07-17 2004-02-19 Otics Corp 動弁装置の潤滑油供給装置
US7458352B2 (en) * 2004-08-07 2008-12-02 Ina Schaeffler Kg Switchable valve drive element of an internal combustion engine
US20100294219A1 (en) * 2006-12-18 2010-11-25 Mario Prokop Rotationally locked tappet of a valve timing mechanism

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10494960B2 (en) 2015-12-18 2019-12-03 Eaton Corporation Engine valve lifter
WO2017106839A1 (fr) * 2015-12-18 2017-06-22 Eaton Corporation Dispositif d'élévation de soupape de moteur
CN108474273B (zh) * 2015-12-18 2021-05-11 伊顿智能动力有限公司 发动机阀门挺杆
CN108474273A (zh) * 2015-12-18 2018-08-31 伊顿智能动力有限公司 发动机阀门挺杆
US10690016B2 (en) 2016-02-19 2020-06-23 Eaton Intelligent Power Limited Engine valve lifter having anti-rotation plug
WO2017143111A1 (fr) * 2016-02-19 2017-08-24 Eaton Corporation Poussoir de soupape de moteur comportant un bouchon anti-rotation
GB2548900A (en) * 2016-04-01 2017-10-04 Delphi Int Operations Luxembourg Sarl Tappet, high pressure pump comprising at least one tappet, engine comprising at least one tappet, engine comprising a high pressure pump having at least one
US10385957B2 (en) 2016-04-15 2019-08-20 Koyo Bearings North America Llc Follower mechanism
US10119607B2 (en) 2016-04-15 2018-11-06 Koyo Bearings North America Llc Follower mechanism
USD885439S1 (en) 2017-02-17 2020-05-26 Eaton Corporation Engine valve lifter having anti-rotation plug
USD932853S1 (en) 2017-02-17 2021-10-12 Eaton Intelligent Power Limited Engine valve lifter having anti-rotation plug
US10968788B2 (en) 2018-01-31 2021-04-06 Eaton Intelligent Power Limited Two-part lifter assembly
US11143059B2 (en) 2019-10-03 2021-10-12 Koyo Bearings North America Llc Tappet assembly with unground outer cup
US11149593B2 (en) 2019-10-03 2021-10-19 Koyo Bearings North America Llc Tappet assembly with formed anti-rotation alignment device

Also Published As

Publication number Publication date
US20160319708A1 (en) 2016-11-03
CN104832238A (zh) 2015-08-12
CN204804893U (zh) 2015-11-25
US10132208B2 (en) 2018-11-20
EP3092377A4 (fr) 2017-11-15
EP3092377A1 (fr) 2016-11-16

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